Lock



April 29, 1930. J. CARLIN 1,756,342

' LOCK Filed July 2, 1927 .l il ll,

' M 50 secured to the lock-case.

Patented Apr. 29,1930

JOSEPH CARLm, or'nEw HAVEN, ConNEC'rIC T, assrenon TO SABGENT & COMPANY,

r or NE -HAVEN, CONNECTICUT Application filed. m a, 1921' Serial m. 203,172

v This'invention"relatesto locks and more i /7 w particularlyito 31110113156 lock construction, suitable for use in a door,' -1n-wh1ch a deadbolt is provided having an extra long throw and a novel means for elfecti ng the reciprocation of the dead-bolt.

In looks as previously;knownfin which dead-bolts havebee'n provided having long throws, it'has generally been the practice to rotatethe key or other'meansf'o'r operating or'other bolt "operating means'into engage-v ment with the bolt {a plurality of times, the bolt being advanced witheachengagement.

' the bolt more than oncetojbringthe roll-back 3 An object of the present invention is to pro}, vide a'dead-bolt' having a plurality ofmeans' thereon adapted to be engaged successively by a roll-back so tli'atthe roll-back may have a moreextended engagement with the-coop eratingparts' of the dead-bolt,- and that the extended during thisdead-bolt may be fully 7 single engagement of the roll-back therewith.

operation of the lock.

To these and other ends, the invention consists in the novel features 'and' combination so of parts to be claimed .7

In the drawings, v V Fig. 1 is a view of a 1001: according to my invention-,with the cover removed to show theinterior parts; Fig. 2 is a i Fig; -1,but 'showi different position V Fig. 3 is a view similarto Fig.

the lock still furtherprotracted'; and

' which 'thefdead-boltisfully protracted.

Referring'to the dr'awings in which Thave shown a preferred embodiment of my invention, the reference numeral 5' indicates a mortiselock case of usual form having a face plate 6 and equipped with a dead-bolt 8,

provided with a head 9, andwith a shank 10 I guided in its movements by posts 11 and 12 talon 1411, 5 bothofits upper edges beveled, 'as shown at 18 and 19.v

shank 10, a ispring 22 being secured ontumbler 20, adjacent the stud 21-'and cooperating Withpost 23, secured in dead-bolt 8 to urge and 32. e p I H r i The key mechanism forcontrollin'g the bolt hereinafter described 'and r comprises a pin tumbler cylinder 33 screwed v V the usual manner. fragmentary view simllar to ngthe parts of the' lock 1n 2,but with ,the'k ey mechanism in the usual manner, .upon' rotation of the key the roll back 3 1 On the rear end of the stem or shank 10 are upwardly extend- "ing 'spac'ed talons 13, 14- and 15, the talons Y 13 and 15 having their inner and upper faces beveled or chamferedias at 16 and-17, while" A tumbler 20 is'pi'votally supported on the shank 10, by means] of a stud 21, pivoted'in the tumbler 20 upwardly into the position shown in" Fig; 1 which is the normal position "of the tumbler. On the upper portion of tumbler 20 is an extension'24, having on the front end thereof theface 25, cooperating "with face '26 of post 12, to lock the dead-bolt in its retracted position, as shown in Fig. 1', while on the rear end of extension 2% is a similar face 27, cooperating with face 28 of post 12, tolock Fig. 45. On the rear end of tumbler 20 are a pair of upwardly extending members 29 and i 30, of which the member 29" is received be tween the talons 13 and 14, while themem- 75 her 30 is receivedbetween talons l l and 15.] The upper and adjacent edges of the members '29, andv30 arechamfered, as shown at 31 side of the door and having arotary cam or roll-back 34 adapted to be rotated by a key in The rollback 34E has itslowerend bifurcated to form'two bolt-engaging terminals 35xand 36, the outer and lower edges of which are curved to form cams, as

shown at 37and 38. V p The lock case 5 is provided with post 39, 00-

limit the rearward movement of the bolt,

In-operation, a key is inserted in theslot of i and 1 brought around to the point where the cam" face37 engages thechamferedfportion 31 of the "extension 29 of the tumbler 20. The

i Y: the bolt in its protracted position, as shownin j Fig. 4: is a view similar to Fig; 1, but operating with the shank 10 of" the bolt8 to talon 14 being 'cut' away at 18 provides clearance for the roll-back. Upon the continued rotation of the roll-back 34, the cam surface 37 rides up over the extension 29, forcing the tumbler 2O downwardly about the pivot 21 and disengaging the locking face 25 from the post 12. The beveled edge 16 of talon 13 permits the roll-back 34 to disengage the face 25 from post 12 before the terminal or leg 35comes in contact with talon 13. The terminal 35 of the roll-back 34 then comes in contact with the talon 13 and continued rotation of the roll-back 34 will effect the initial protraction of the bolt 8. Further rotation of the roll-back 34 will cause the terminal or leg 36 of the roll-back 34 to come in contact with the talon 14,.as shown in Fig. 3, to effeet the final protracting movement of the 7 bolt.) The final rotation of the roll-back 34 resultsin the bolt 8 being protracted to such a position that the le 36 clears the beveled edge 19 of the talon 14, whereupon the bolt is in its fully protracted position. Movement of the roll-back away from the talons 13 and 14 permits the tumbler 20 to move'upwardly under the urge ofthe spring 22, and the face 27. of tumbler 20engaging the post- 12, will lock the dead-bolt in its protracted position.

The unlocking of the bolt is done in precisely the same manner, but by rotating the roll-back in the opposite, direction,'the cam surface 38 of the roll-back .34, engaging the extension;30, of the tumbler 20, rides up over this extension and forces the tumbler downwardly to disengage the locking face 27,

fromthe post 12, whereupon the'rolhback 34 engagcs'successively the talons 15 and 14 to retract the bolt and finally upon being moved away from the bolt 8 permits the tumblerto move upwardly and lock the bolt in the retracted position by the engagement of face 25 with post 12. \Vhile I have shown a prefered embodiment of my invention, it will be understood that it is not limited to all the details shown, but is capable ofmodification and variation within the spirit of the invention and the scope of the appended claims.

Unit I claim is V 1. In a door look, a case, a bolt mounted in r the case having a stem, a key operated roll- V tumbler having an endext thestem and one on the in the back mounted in the case, a plurality of pairs of engaging elements on said stem and rollback, each pair comprising one element on V V rollfback, said pairs. of elements being adapted to .be successively engaged jduning the operation of the rollbackfto. impart an extra long throw to hthe bolt, and a'tumbler pivoted ending between the elements on said bolt and adapted tov be engaged by said roll-back.

beradapted to protract and retract the bolt.

said stem having a plurality of parts adapted to be successively engaged by the key operated member to impart successive throws to the bolt, and a tumblerpivotally mounted on the, bolt, said tumbler having portions adapted to extend between the parts on said stem and to be engaged by the key operated member. a i V 4. In a lock case, a bolt having a stem provided with aseries of spacedtalons, a key operated member mounted in the case to protract and retract the bolt, said member being bifurcated whereby the prongs thereof extend into the spaces between the talons and engage the latter, the prongs on said key operated member being relatively long, and

the spaces between the talons being relatively deeper and of greater width than the width of the prongs.

I 5. In a lock case, a bolt having a stem provided with a series of spaced talons, a key operated member mounted in the case to protract and retract the bolt, said member being bifurcatedwhereby the prongs thereof ex tend into the spaces between the talons and engage the latter, and a tumbler pivoted to the bolt and extending into the spaces between saidtalons to also be engaged and operated by said prongs.

6. Ina door lock, a case, a boltmounted 1n the case having a stem provided with a .pair of spaced talons and a third talon intermediate said spaced talons, a key operated bolt throwing member mounted in the case,

said member being-provided with prongs to enter the spaces between the intermediate ,talon and the other two talons to engage certain ofsaid talons successively and impart an extra long throw to the bolt, and a tumbler pivoted to the bolt andhaving portions thereon extended into'the spaces between adjacent talons to also be engaged and operated by saidjp'rongs. V a v In witness whereof, I have hereunto set my handthis 21 day of June, 1927 V r JOSEPH CAR-LIN.

to the bolt, said 1 In a door look, a. c'ase,-a bolt mounted. 7'

casehaving a stem with-a plurality V 

